They utilize a dual light source (365nm + 405nm) to cure various types of nail gels.
Key features often include multiple timer settings (e.g., 30s, 60s, 90s) and an automatic infrared sensor that turns the lamp on when a hand is inserted.
The lamps have an LCD digital display to show the remaining curing time.
They are designed to be safe for eyes and skin and typically have a long lifespan.